研究目的
To develop a stable and efficient quasi-solid state electrolyte for dye-sensitized solar cells (DSSCs) using a novel honeycomb-like porous membrane (PMMA/PIL/PIN) prepared through non-solvent induced phase inversion method.
研究成果
The PMMA/PIL/PIN membrane based electrolyte demonstrated good charge transport properties, high ionic conductivity, and excellent stability in DSSCs. It exhibited a power conversion efficiency of 5.96% and maintained up to 84% of its initial efficiency after 250 hours, making it a promising candidate for enhancing DSSC performance.
研究不足
The study focuses on the development and characterization of a novel electrolyte membrane for DSSCs. Limitations may include the scalability of the membrane preparation method and the long-term stability under varying environmental conditions.
1：Experimental Design and Method Selection:
The study involved the preparation of a novel honeycomb-like porous membrane (PMMA/PIL/PIN) based quasi-solid state (QSS) electrolyte using non-solvent induced phase inversion method. The membranes were characterized for their structure, morphology, and physical properties.
2：Sample Selection and Data Sources:
The samples included synthesized polyindole (PIN), poly(3-decyl-1-vinyl imidazolium iodide) (PIL), and PMMA. The membranes were compared with PMMA/PIL, PMMA membrane, and liquid electrolyte (LE) for their performance in DSSCs.
3：List of Experimental Equipment and Materials:
Materials used included PMMA, PIL, PIN, iodine (I2), lithium iodide (LiI), 4-tert-butylpyridine (TBP), 1-propyl-3-methylimidazolium iodide (PMII), vinyl imidazole, azobisisobutyronitrile (AIBN), valeronitrile, and absolute ethanol. Equipment included SEM, FT-IR spectrometer, DSC, TGA, XRD, and electrochemical work station.
4：Experimental Procedures and Operational Workflow:
The porous polymer membrane was prepared by blending synthesized PIN and PIL with PMMA via non-solvent induced phase inversion method. The membranes were characterized, and their performance in DSSCs was evaluated.
5：Data Analysis Methods:
The ionic conductivity, diffusion coefficient, and photovoltaic performance of the membranes were analyzed using electrochemical impedance spectroscopy (EIS) and current-voltage (J-V) characteristics.
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Poly(methyl methacrylate)
average Mw = 120,000 g/mol
Sigma-Aldrich Co., Ltd.
Used as a polymer host for fabricating porous polymer membranes.
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Iodine
Sigma-Aldrich Co., Ltd.
Used in the preparation of the electrolyte solution.
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Lithium iodide
Sigma-Aldrich Co., Ltd.
Used in the preparation of the electrolyte solution.
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4-tert-butylpyridine
Sigma-Aldrich Co., Ltd.
Used in the preparation of the electrolyte solution.
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1-propyl-3-methylimidazolium iodide
Sigma-Aldrich Co., Ltd.
Used in the preparation of the electrolyte solution.
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Vinyl imidazole
Sigma-Aldrich Co., Ltd.
Used in the synthesis of polymeric ionic liquid.
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Azobisisobutyronitrile
Sigma-Aldrich Co., Ltd.
Used as an initiator in the synthesis of polymeric ionic liquid.
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Valeronitrile
Sigma-Aldrich Co., Ltd.
Used in the preparation of the electrolyte solution.
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Absolute ethanol
Sigma-Aldrich Co., Ltd.
Used in the synthesis of polyindole and washing the photoanode.
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Indole
SRL Chemicals
Used in the synthesis of polyindole.
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Bromodecane
SRL Chemicals
Used in the synthesis of polymeric ionic liquid.
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